Welsh First Minister Vaughan Gething is set to face a motion of no confidence next week.
Mr Gething has only been in post since March but his government has since been through what he described as a “difficult” time.
The motion of no confidence has been tabled by the Welsh Conservatives, the largest opposition party in the Senedd, and is set to take place on Wednesday 5 June.
Mr Gething has faced questions over a controversial £200k donation to his leadership campaign from a man convicted of environmental offences.
He has refused calls for the money to be returned and remaining funds have instead gone to “wider progressive causes”.
He has said the donation was within the rules but has commissioned a review of future political donations.
Mr Gething was also accused of having misled the COVID Inquiry after a text message emerged in which he said he would delete messages in a ministerial group chat.
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The first minister insisted the messages related to internal Labour Party matters.
He then sacked Hannah Blythyn, a minister in his government, for allegedly leaking them to the media – allegations she denies.
‘Infighting’
Welsh Conservative leader Andrew RT Davies said Senedd members would have their say on Mr Gething’s “judgement, his transparency, and his truthfulness”.
“It’s time to put an end to the obfuscation, the drift and the infighting and vote no confidence in Vaughan Gething,” he added.
Plaid Cymru leader Rhun ap Iorwerth said it was Labour and Keir Starmer who would ultimately decided if Mr Gething continues in post.
“In accepting £200k from a convicted polluter we obviously believe Vaughan Gething has undermined the office of First Minister and the people of Wales’ confidence,” he said.
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But Labour leader Sir Keir Starmer has given his backing to Mr Gething.
Sir Keir told reporters on the campaign trail for the general election that the first minister is “doing a good job”.
“I’m looking forward to being with him in this campaign where we will campaign together for, what I hope will be, the next Labour government,” he added.